Resideo - Honeywell Home L4006E1000 Aquastat Controller

The L4006E1000 Aquastat Controller from Resideo (Honeywell Home) delivers precise boiler temperature control for reliable boiler operation. It features a copper sensing bulb (3/8" diameter x 2-7/8" length) and a 1-1/2" capillary, enabling direct horizontal or vertical immersion for versatile installation. This high-limit, manual-reset aquastat is ideal for boilers and storage tanks.

• Temperature range: 130–270°F
• Maximum rating: 150°F
• Contacts: SPST, Break on Temperature Rise; 8A @ 120V AC / 1.3A @ 240V AC (full load); 48A @ 120V AC / 30.6A @ 240V AC (locked rotor); 0.25A @ 0.25–12V DC (millivolt)
• Connections: 3/4" conduit, screw terminals
• Sensing & construction: Copper bulb (3/8" Ø x 2-7/8" L); capillary 1-1/2"; sensing liquid toluene or silicone oil
• Dimensions & compatibility: Overall 2" W x 2-1/8" D x 5-5/8" H; well spud size 1/2"
• Applications & approvals: Boiler, storage tank; UL, CSA, AGA

Designed for boiler and storage-tank applications, this aquastat features a robust immersion well, reliable manual reset, and compatibility with standard 3/4" conduit wiring. Its UL, CSA, and AGA approvals meet quality and safety standards, making it a trusted choice for professional installers and homeowners seeking dependable boiler control and temperature safety.